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<header class="api-profile-header">
  <h1 class="api-profile-header-heading">$exceptionHandler</h1>
  <ol class="api-profile-header-structure naked-list step-list">
    
  

    <li>
      - service in module <a href="api/ng">ng</a>
    </li>
  </ol>
</header>



<div class="api-profile-description">
  <p>Any uncaught exception in angular expressions is delegated to this service.
The default implementation simply delegates to <code>$log.error</code> which logs it into
the browser console.</p>
<p>In unit tests, if <code>angular-mocks.js</code> is loaded, this service is overridden by
<a href="api/ngMock/service/$exceptionHandler">mock $exceptionHandler</a> which aids in testing.</p>
<h2 id="example-">Example:</h2>
<pre><code class="lang-js">angular.module(&#39;exceptionOverride&#39;, []).factory(&#39;$exceptionHandler&#39;, function() {
  return function(exception, cause) {
    exception.message += &#39; (caused by &quot;&#39; + cause + &#39;&quot;)&#39;;
    throw exception;
  };
});
</code></pre>
<p>This example will override the normal action of <code>$exceptionHandler</code>, to make angular
exceptions fail hard when they happen, instead of just logging to the console.</p>
<p><hr />
Note, that code executed in event-listeners (even those registered using jqLite&#39;s <code>on</code>/<code>bind</code>
methods) does not delegate exceptions to the <a href="api/ng/service/$exceptionHandler">$exceptionHandler</a>
(unless executed during a digest).</p>
<p>If you wish, you can manually delegate exceptions, e.g.
<code>try { ... } catch(e) { $exceptionHandler(e); }</code></p>

</div>




<div>
  
  <h2 id="dependencies">Dependencies</h2>
  <ul>
    <li><a href="api/ng/service/$log"><code>$log</code></a></li>
  </ul>
  

    

  <h2 id="usage">Usage</h2>
    
      <p><code>$exceptionHandler(exception, [cause]);</code></p>


    

    
<section class="api-section">
  <h3>Arguments</h3>

<table class="variables-matrix input-arguments">
  <thead>
    <tr>
      <th>Param</th>
      <th>Type</th>
      <th>Details</th>
    </tr>
  </thead>
  <tbody>
    
    <tr>
      <td>
        exception
        
        
      </td>
      <td>
        <a href="" class="label type-hint type-hint-error">Error</a>
      </td>
      <td>
        <p>Exception associated with the error.</p>

        
      </td>
    </tr>
    
    <tr>
      <td>
        cause
        
        <div><em>(optional)</em></div>
      </td>
      <td>
        <a href="" class="label type-hint type-hint-string">string</a>
      </td>
      <td>
        <p>optional information about the context in which
      the error was thrown.</p>

        
      </td>
    </tr>
    
  </tbody>
</table>

</section>
    
    

  
  
  



  
</div>


